Serena Williams Goes Topless For Breast Cancer Awareness Month

Tennis icon also sings "I touch myself" for the campaign.

Serena Williams makes a triumphant return to the US Open. (DON EMMERT/AFP/Getty Images)

Anyone offended by the sight of Serena Williams in a catsuit might want to look away.

The tennis legend is stepping off the court and stepping up to support October’s Breast Cancer Awareness Month with a video in which she sings an a cappella version of I Touch Myself. In the video, Williams goes totally topless as she shows off a surprisingly great singing voice on The Divinyls’s 1990 hit.

The video, part of the I Touch Myself Project, is supposed to help spread the word about checking one’s own body and its importance in the early-detection of breast cancer. The campaign was first launched in 2014 with bra manufacturer Berlei, according to Marie Claire, and was inspired by the loss of The Divinyls’ front-woman Chrissy Amphlett, who died at the age of 53 after a battle with breast cancer.

Williams shared her admiration for the charity’s work on her Instagram, and said that the experience put her in “daunting and unfamiliar territory.”

“Yes, this put me out of my comfort zone, but I wanted to do it because it’s an issue that affects all women of all colors, all around the world. Early detection is key—it saves so many lives. I just hope this helps to remind women of that,” she said.